William K. Vanderbilt Costume Ball [Album cover.]

Mrs. William K. Vanderbilt (neé Alva Erskine Smith)

Mr. William Jay

Mr. [William Bayard] Cutting

Mr. William Douglas

Mrs. William Douglas (neé Adelaide Townsend)

Lady Mandeville (neé Consuelo Yznaga)

Mr. H. Duncan Wood

Miss [Frederica] Belmont (later Mrs. S. S. Howland)

Miss Amy Townsend

Mr. Isaac Bell

Mrs. Henry Leavitt

[Mrs Arthur Paget (née Mary (Minnie) Paran Stevens).]

Mr. Allen Thorndike Rice

Mrs. Sam Penniman (neé Mary Knower)

Mr. Pierre Mari [Peter Marie.]

Mr. Thorne

Miss May Bird

Mrs. Peters[?]

Mrs. Frederick Kernochan (neé Elsie Lawrence Howland)